Raceworks Performance Aluminium Cast 90 Degree Elbow Reducer 3.00" to 3.50" (76mm to 89mm) - ITC-090-300350. Raceworks Aluminium Cast 90 Degree Elbow Reducer 3.00\" to 3.50\" (76mm to 89mm). This high-performance component is designed to optimize engine airflow and enhance efficiency, ensuring that every ounce of power is utilized.